Molding-machine



E. N. OLSON AND S, SWANSON.

MOLDIM` MACHINE. APPLscAnoN FILED Ammo, 1G20.

Patented J uly 5, 1921.

d SHEETSSHEE l au Lum/Hoz uansan j. JY son/ E. N. OLSON AND s. SWANSUN.

MOLDJNG MACHINE.

APPucAmn HLED Aueso, 1920,

Patented July 5, 1921.

3 SHEETS-SHEET Z NN .WN MY AMWMWWMN E. N. OLSON AND S. SWANSON. NIULDINGMACHINE.

APPLncArlon man maso. :920.

1,388,748. Patented July 5,1921.

3 SHEETS-SHEET 3.

UNITED STATES PATENT OFFICE.

HOLDING-MACHINE.

Specification o! Letters rntent.

Patented July 5, 1921.

Application led August 30, 1920. Serial No. 406,901.

To all whom it my'conce'm:

Be it known that we, EnNss'r N. Onion and SWAN Swanson citizens of theUnited Sta-tes, residing at Muskegon, in the county of Muskegon andState of Michifran, have invented certain new and useful rimprovementsin lllolding-lilachines, of which the lfollowing is a specification.

This invention involves improvements in a known type of molding machineswherein are used for urposes of general coperation a rotary tab eadapted to be intermittently operated to bring successive mold boxes ormolds into operating positions beneath a vertically movable corepresser, there being revisions for actuating said core presser to oroe acore into the mold. The operation of the presser is of course in timedrelation to the operation of the rotary table, taking place at a periodwhen the table is stationl'lilith the foregoing in view the presentinvention resides in improved operating means for the core presser,special actuating means whereb the molds are elevated as they aremovedrrom operatin f position to a posltion for lifting out from t erotary table for the removal of the molded article, tother with othernovel details of construction.

In the present instance the molding machine is desi ed primarily for themaking of molded rubber batteryA jars and similar articles ofmanufacture.

In the accompanying drawings` Figure 1 is 'a vertical sectional view ofthe molding table embodying the essential features of the invention;

Fig. 2 is a top plan view of the same;

Fig. 3 is a vertical sectional view showing more particularly themechanism for intermittently o erating the rotary table and controllingt e valves by which the passage of the pressure medium to the pressurecylinder is controlled:

Fig. 4 is a. view on the line 4-4 of Fig. more clearly showing theclutch devices and two of the valve operating members;

Fi 5 isa perspective view of the spring whic eoperates with the clutchpin, and its ofstanding operating projection;

Fig. 6 is a combined view showing in perspective the elements of themold or mold Fig. 7 is a sectional view showing the bottom portion ofthe pit and illustrating in an exaggerated manner the inclined surfacewhich elevates the molds as they pass from operating position to aposition for removal from the rotary table;

Fig. 8 is a sectional view of the clutch means showing more clearly therelation of the actuating projection on the bcd with respect to thespring coperating with the clutch lipin, the view being about on theline 8 8 o Fig. 1.

Fi 9 is a detail perspective view of n. detac able auxiliary frame platefor the openings in the rotary table.

Describing the invention specifically, the machine forming the preferredembodiment thereof comprises a stand A, the bed B of which sup orts atone side the rotary table C, and at t e other side carries theoperating.r mechanism generally shown at D by which the table isactuated intermittently` and the valve mechanism similarly operated tocontrol the depression of thc cores as hereinafter set forth. The table(l operates about the axis l consistin of a central trunnion. andsuitable antiriction bearings 2 arc preferably used intemnediate the bedB and the table C. The table C is equipped with a suitable number ofmold or mold box receiving openings 3 seen best in Fig. 2. to which themold boxes 4 may be supplied by hand or otherwise, and similarlyremoved. The mold boxes 4 are seen best in Fig. 6. as comprising aremovable side 5 formed with lugs 6 at its lower edge to enter openings7 in the bottom of the mold box proper :1nd establish un interlockingconnection at this point. Likewise catches 8 at oppositr` ends of themold box are adapted to engage projections 9 at opposite ends of theremovablrl side 5, in an evident manner. The mold box 4 has the Vsidesand ends thereof formed with removable uppermost section la of increasedthickness, thereby establishing shoulders 4" for the pur ose ofcontrollingr the height of the ja rs. i ections of different widths maybe employed to obtatin jars of different depths. Adjacent to shoulders4" the sides and ends of the box 4 have slots 4 Athe pipe 17 andthe pipe18, 4cuttingy therein. On. the bottom of the mold box 4 are one or morecom projections 10 which taper lfromA one end` to the other. On thebottom of the mold box are mold ribs 4 which coact in the moldingoperation to pro duce spaced supporting ribs on the bottom oit' themolded article.

The mold boxes` are designed to be placed in the openins of the rotarytable C as said table rota progressively and intermittently, the saidboxes being thereby carried into position beneath a vertically movableplunger or presser 11 disposed above the table C' and the bed B to coactwith a plug or core 11' in the molding operation. In ,the bed B belowthepresser 11 is formed a pit 121into which the mold box passes as thetable C rotates, so as .to assume its operative position beneath thepresser. When each mold box reaches its .operating position beneath-thepremer the core which is reviously dropped into the mold box upon olastie materiel is caused m move' downwar yinio the same by theoperation of the piston 12'L in the c lincler 13 which is supported by astandar 14 extendin upwardly from the bed of the stand A. gl'hc piston12 is con` nected by a piston rod 15 with the core presser 11 and fluidpressure-pipes 16 and 17 lead to the portions of the cylinder 13 aboveand below r ectively, the piston 129. The pipes 16 and 1 are incommunicationwith a supply pipe ldleading to a reservoir containing any`suitable pressure medium such -as water, oil, air, or the like. At theunion 19 which connects the pipes 16, 17 and 18 is a control valve .ofany suitable type operable by a valve lever 20 which in one positioncauses communication between the pipe 18 and the pipel, and in anotherposition establishes communication between oli' the Acommunicationbetween the pipes 1 and 18 and vice versa.

The means to operate the velvedevice including the lever 20 comprises apair of pendant kicker bars or actuating members 21 and Q, arranged in4proper relation to op eratn cams which comprise notched portionsprovided in grooves 24 of a. main vulve operating member 25. Theoperating member 25 consists 4of a constantly Adriven approximatelycircular element mounted on e drive shaft 26 operated in any suitablemanner by a fixui pulley -27 :adjacent to the loose pulley 28. The shaft261s driven constantly during the use of the machine and the notches 23are located approximately 120 degrees apart in relation to the peripheryof the grooves 24 so that during each revolution of the member 25, thevalve 29 previously referred to is opened once and `closed once. Thisaction of the valve results in u downward stroke of the presser 11 andan upward stroke, lowering and raising the 'same' into and out of egem.-ent ectively with the mold cori?.1g ms'p The means to operate tbe tableC is. also o posite points and designated at BSB-(see 41g. Qn ge clutchxnlhuberclgchis a curve s w1 a u 1n 34 o eralnmln aA didine. openingrough lthe th clul'c mem er 32, said pm be nominally pressed by the ring33 to entert e notches 2 of the' pluto member B1 whenever the pin 34anrlves 'opposite saidnotche's. -The spring 33 has a sustaining liftingarm 35- odapted during the rotation of the parte -26 and 30 to engage a-pr 'ection 36 on a suit-y able bracket 8'( carried 'y the bed B,whereby the spring 33 is lifted at its free end away from the-member 30thereby pul out on the pin. 34 to dieengege the letter rom the abruptwall of the notch 82 with which vit may be engaged, rmittino the clutchmember 30 to rotate gime-half' revolution without turning the clutchmember 31, until the next succeeding notch 32 is engagedby seid clutchpin 34. l

Bearlng in mind-the -above .construction of clutch devices, and that-theVclutch member 31 is provided with a-sleeve 31? on which is keyed orotherwise secured the gear 38, ,and

that the gear 38 is in mesh with a gear' 39 on the outside of the tbleC,it will be evidentthat the operating member 25, driven by the shaft 26is adapted to actuate -the table C intermittently through thecorresponding operation of the internal clutch member 81 and its`associated r 88,.

Fig. 0 shows an auxiliary etachable liet vplate 40 adapted to fit -inan'opening 3 of the table C fovprovide inconvenient means for:iseistingin supporting the mold' box when such box is of a size smallerthan Ve one; suitable to fit into the opening-f3 itself. 'There will betimes whenthe battery jars to be Vmolded by this machinewill "be ofsmaller Vsize than those Vsuitable to be molded by the boxes 4 which fitthe openings 3, the

openings 3 to be of a size suitable for the maximum sized battery jarsorarticle to be molded. The flat plates 40 may be of diierent sizes forreduced sized mold boxes.

Sumumm/ of operooo of We shall assume that operators ane in attendanceupon. the machine and -mold boxes 4 ig; migas nlrmlured therein und thecores iiise'lrti llwrcupmi and removed frmu. llir nizie'liim :i l'trrsurli nperntimi, tu telifilrittlw rliuplfiw mtnt nl' the molilcrl:xrtillv alici* such mural. During the uperntimi nl' tlm :lrivo slmft 26the cliittli meiiilwr ft) will Rulli inutically cunntict tlifi geur 3Bwith the upm ming; member 25, and impurt; to siiitl ,geur n partialrevolution sulrivxit to impartr to tliv` table (l that amount ofmovvmeut usmgsary tn bring .fi freshly placed molti linx l intr; tim pit12 beneath the presser 11. There has bussi previously placed in theumlil linx :1S Stated i predetermined and sullirimit pumtitr if litIwnipnsition frmu wlaie-li the uwltltltl :il-tial@ is to be made. inplastic Sluit'. 'Thi- .'U uml 3l having' livr-Univ automatically im.-nlutr'lietl through zu-liiutimi nl" im Spring Y by till@` projrftiuuSiti engaging.- tlm mm1 tlie muvvmeiit of the tulilu rirms mail llw vor@lmx l is uui'zuriitcly tlispnsml licsiwizti im prtsser 11. Just ut thistime" iiiv wiwi-tiny mviubvr 25 hais turnml mflli fivully tu ipii thevalve 29 and Cinisi vuxniriuz'airzithtri lartwfim the pipri lf uml rl.Tini: si l lily Turcos the pistmi 1:3 lluwuwuzel :mil liitvwi` tlirnuglithe prcsmr tlw ninlll wir: Y :in prvssvs the` plnstir sillislzmre:tlwruiu irifi tlm spare lsttwevn the falls :lull lmlltmii nl tlv vornnucl they mills nml lilttfun nl' ller um@ lmx. The slloulilvr formt-lll:il ll' su llw Lllof tlm n'mltl liox liixiitpx tlir upiiziil Ilm of thesubstance whit-li is slmpwl ur mul@ il by thv pressure of tho vor@ inilu@ lim A ttor the dawn tu-tl nifwcmrnt u? tlm #www 11 into the box 4is propvrly mmplrwl 'lu' cum 23 of one of the mrmlmrri ill ir previouslyoperated, opurzttrsi lli 10V-n movcnient nf the vulve 29 limi vf-:iwcommunication hetwmm llw pig-es iT it: so tluit the prot-:Sure mwliuiiiflowing@ *l through into thv` rylimlcr lJ- riiiwf: illu L t0n 12 :intlthe prnsxvr Il. fill ti|if-r ai tho tulile (l has linen s'tzitimuiry,lml u law i' presser 11 luis linnn ilemtd :trulli tlm par! l 30 uml 31nre clulrhml tn qvtlw mici thv 'Mahl (l is foil forward, that,prfrpmtimi E' ufl umvuinf-nt uerossury t0 larii'ig :i trnse mv lmxbvututli (lul prisser :mtl tllu pierna :i rept'ilting fit' tlm oprrntmiwilli-li la lwvn (ltsorilutl.

It will lu'y umltrStnml that lllit4 :i invul nf thv minis 23 :intl tlmmtrliw illu rlutf-li purly 3l rml); liv :irruligtftl in im; suitablemuimor tn prfipm'lv limp tial wilsV 'tivo mrn'mucuts nl tlml vzilv'u ill:ruil 1li-n in 1 f'. it bring nul-@ssiiry nl wurm ilizit lli@ will. (Ylm stationary when the wlw is'wpf-iuslxrl lim-:aussi nl' tlw llnwuwuril:tml upwriru' im il ut the prfssrr il. For ille purpnw fil drawing tlwrmiltletl :iitirflc lrutu ler m lmx thv` Sicil 5 is rtmmtili :mel :istime z-,zii is withdrawn th@ portions. nl tlm muf Substancesprcijorl'ing into :nifl throng-li l sluts l" will be sl'iive'rl ntl', Sotu spmil-j r. irmliliry mfu'liiue, the combinat:z"ul. mi' i iimvnlilutable. mole] i irri if) tiri tililv und mlnptel to lic Elst-relay. :iconstantly rntiitml lrivpng.; ifmvut. Waring 'for :itlvanring tlmrlilel. :i vlutt'li roainectimi between the guurwill llaa :lrii ingclement mmms for :iu-

livzilly' fuiitrulling tlv? vlutfili m'iiiut'liuu 'w ufrrmittviilynilmnfe the table. a presser @Muah-ll in wiiparritivt rcl'rltiun to themnlll tluill prttiti-urr int-uns for fipm'ntiugf grrr-mum lnlllilliig avulve., i1 valve kwel" um: zA pnir :iff alf-timtiug bars conuertlll tinthe liwr :mtl ruling upmi tlm constantly fwtwiugf driving: rliziiiut.:will driving ultiiuvist living trirzwil with minis tur actuatingtliflum: in wurs'il ilu,- i'ulvn mul operato tlm gmufelr iii iiumlrlzitiim te; tlm mm'rumuts ilu xlilr.

l: u uitsluit l is: iii-lari: iw tri; iis-mines u certain position onthe bed. Huid pressure means for operating the prcescr inending a valve,n valve lever.l pendant connector bars depending from the rdlvc level",an operating member comprising :1 bod having spaced grooves to receivethe amis of the connector buro1 and cams formed at said rroovcs tocngngns and operate the connector are? Sari operating member inwing aClutch member prrr jccting therefrom` a second cintch member :njacentthat tiret. mentioned, a spring :retireing cintch pin intermegite Saidclutch members to connect the same at predetermined inervals. automaticmeans coperating to operate the clutch pin to disconnect the clutchmembers and gearing connecting the second clutch member with the table.

5 In a molding: machine :i rotetir'e tokio, :1 bed Supporting the tablefor intcrmiient operation, mold boxes carried by the tnbe, coresdisposed in the boxes, o presser cngngr able with euch core to press thehitter into each mold box when the box assumes e cermin lmeion on thebadi Hand prcmire means for opcruting he presser including :n valve, emirc evcr,y pendant, connector mrs dea wndingr from the valve erer, :inoperating member comprising a body having spaced g1-novos tu receive theends of the connccror immK mi cams formed nrt sani groom-S to engage andoperate the c-onnnetor lmrs` said operating member having a durch memberprojecting therefrom. a second clutch member adjacent that firstmentionedyz: spring actuated clutch pin intermediate said clutch membersto connect the sume nt predcen mincr inten-rails. automatic mmns copefating to opcratc the clutch pin to disconnect hc hitch members. anni mennefor intcrml ently driving the table from Suid operating member, i

In testimony whereof we nfx our :signamires.

ERNEST N. OLSON. SWAN SVANSN.

